Image space-based image field depth simulation method

Abstract

The invention relates to an image space-based image field depth simulation method comprising the following steps: in step S1, a scene image of a reference visual angle is obtained, and a matlab is used for generating texture mapping; in step S2, the texture mapping is subjected to affine transformation, and pixels in the scene image of the reference visual angle are mapped onto an image of an object visual angle via a mapping function; in step S3, as for a plurality of pixel points, mapped to the same point location, in a result obtained from step S2, a minimum depth is kept; cavities in the images are filled, and point location information of the images is stored; in step S4, a point is set as a focal point, corresponding light rays are extracted from the images that are generated from all preset visual angles, focal point and color information of each point location is determined according to a hierarchy function of the texture mapping, and an image having field depth effects can be obtained after weighted stacking operation. Compared with technologies of the prior art, the image space-based image field depth simulation method is characterized by high precision, simplicity and the like.

Description

technical field

[0001] The invention relates to an image processing method, in particular to an image space-based image depth simulation method. Background technique

[0002] Depth of field refers to the front and back distance range of the subject measured by imaging that can obtain clear images at the front of the camera lens or other imagers. After the focus is completed, a clear image can be formed in the range before and after the focus. This distance range before and after is called the depth of field. There is a certain length of space in front of the lens (before and after the focusing point). When the subject is located in this space, its image on the film is just between the two circles of confusion before and after the focus. The length of the space where the subject is located is called the depth of field. In other words, for the subjects in this space, the blurring degree of the image presented on the negative plane is within the limited range of the permissib...

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